Windows Server 5245 R2 standard - lot of users get unknown with red question mark

Salka, Milan 21 Reputation points
2023-01-31T08:39:57.0766667+00:00

Good morning,

on Windows Server 2012 R2 Standard for more existing users get unknown acount (see in screenshot - red question) in security.

We don´t know why this was happened and how can be repaired.

Thank you.

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Windows Server 2012
Windows Server 2012
A Microsoft server operating system that supports enterprise-level management, data storage, applications, and communications.
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  1. Daisy Zhou 29,561 Reputation points Microsoft Vendor
    2023-02-01T03:03:31.6733333+00:00

    Hello @Salka, Milan,

    Thank you for posting in our Q&A forum.

    The user accounts or groups with red question mark may have been existed on your machine in the past. However, they did not exist now.

    These permissions should be useless, and if you really don't need them, you can delete the permission entries with the red question mark.

    For more information, here is a similar thread for your reference.
    https://answers.microsoft.com/en-us/windows/forum/all/who-is-the-unknown-user-with-a-red-question-mark/5e5ecb2e-67aa-417a-b04c-ec27d2f738b3

    If you have any question or concern, please feel free to let us know.

    Best Regards,

    Daisy Zhou

    ===============================================

    If the Answer is helpful, please click "Accept Answer" and upvote it.

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